Telefon:
+381631049050
Email
[email protected]
omhoog
Toestemming geven
(0)
Mand
Uw winkelwagen is leeg.
English
Serbian
Russian
Spanish
German
French
Italian
Polish
Producten
Laboratorijski potrošni material
Specialites
Schott Duran
La-Pha-Pack, vijale,...
Cytiva
Thermo Scientific
Analytical measurement and testing
Viscosity determination
Viscosimeter
Analytical instruments and systems
Fluoride determination
Melting point determination
Balances
Accessories
Analytical balances
Moisture balances
Other balances
Pocket balances
Precision balances
Weights
Climate and environment measurement
Hygrometer
Special climate meters
Conductivity measurement
electrodes
portable devices
Solutions
Table devices
Density determination
Density meters
Density meter, Pycnometer
Viscosimeter
Material testing
Force measurement
Hardness measurement
Surface analysis
Thickness measurement
Multiparameter measurement
Devices
oxygen measurement
Devices
electrodes and accessories
pH-measurement
Buffer solutions
Electrode accessories
Electrodes
Paper, chopstick
portable devices
Table devices
Thermometers
Laboratory thermometers
Surface, Insertion thermometers
Temperature data logger
Temperature meters
Temperature-Humidity logger
Timing
Clocks
stopwatch
Timers
Chromatography
Gas chromatography
Gas generators
GC columns
GC consumables
GC reagents
Liquid chromatography
Glass columns
HPLC columns
Solvent storage/handling
NMR/EPR
Accessories
Tubes
Sample preparation
SPE
Syringe filters
Syringes
Disposable syringes
Microlitre Syringes
Thin-layer chromatography
Accessories
Chambers
Detection
Plates
Vials
Accessories
NMR tubes
Vials, Septa
Cleanroom, Cleaning and sterilisation
Cleaning implements
Brushes
Draining racks
Wipes, cloths
Cleanroom
Cleaning
Documentation and adhesive tapes
Eye protection
Facility
Hand protection
Protective clothing
Disinfection
Compressed air spray
for Instruments
for surfaces
Screen cleaners
Steam sterilisers - Autoclaves
Accessories
Instruments
Sterile packaging
Ultrasonic cleaners
Instruments
Ultrasonic cleaners
Washers, disinfectors
Accessories
Instruments
Distillation, separation, filtration
Distillation, synthesis
Components for Extraction
Components for reaction and distillation
Distillation-Accessories
Dropping Funnels
Flasks with NS joint neck
Flat ground flange reaction vessels
Gas wash bottles
Ground joints, attachable
KPG stirrer and bearings
Laboratory reactors
NS joints accessories
Reflux condenser
standard ground stoppers
Stopcocks and Valves
Tubing adapters
Filtration
Dialysis tubes
Filter paper, qualitative
Filter paper, quantitative
Filtration apparatus
Glass-fibre filters
In-Line filter
Membrane filters
Microfilter plates
Syringe filters
Rotary evaporators
Accessories
Instruments
Separating, centrifuging
Benchtop centrifuges
Centrifuge tubes
Minicentrifuges
Environmental-, soil-, water-, food analysis
Sample analysis
Oil Testing
BOD
COD
Elemental analysis
Extraction
Kjeldahl
Milk analysis
Photometers
Special distillation
Turbidity
Sample preparation
Air sampling and analysis
for standard analysis
Trace analysis
Accessories
Tubes
Water purification
Distillation
Pure and ultra-pure water
General laboratory consumables
General laboratory aids
Accessories for electrical device
Bags, Foils
Batteries
Documenting
Greases
Labels
Laboratory jacks
Stands, Fittings
Heating
Beaker tongs
Burners
Drying
Tripod
Tools
Forceps
Glass working
Knives, Scissors
Scoops
Spoons, Spatulas
Workshop tools
Tubing
Adapters, Clips, Clamps
Plastic
Rubber
Stoppers
Tubing/Gas
Vessels
Aspirators and Carboys
Baskets
Beakers
Buckets
Containers
Crucibles
Cylinders
Dishes
Flasks
Funnels
Measuring jugs
Narrow-mouth bottles
Reagent bottles
Spray, dropping bottles
Square bottles
Stoppers
Test tubes
Transport boxes
Tube racks
Wide mouth kegs
Wide-mouth bottles
Heating and cooling technology
Cooling
Biobanking
Cryogenic accessories
Cryogenic boxes
Cryogenic racks
Cryogenic storage tanks
Cryogenic tubes
Dewar flasks
Ice machines
Liquid nitrogen-Accessories
Low and Ultra low temperature freezers
Refrigerators and Freezers
Refrigerators and Freezers ex protected
Transport boxes
Heating
CO2-Incubators
Cooling incubators
Heating baths
Heating mantles
Hotplates
Incubators
Microwaves
Ovens, Furnaces
Shaking incubators
Shaking water baths
Temperature controllers, thermostats
Test incubators
Thermoblocks
Universal, Heating and Drying incubators
Vacuum drying incubators
Water baths
Temperature regulators
Circulator baths
Cooling-Thermostats
Dynamic Temperature Control Systems
Heating-Thermostats
Temperature Control Accessories
Life Sciences
Cell Culture
Aspirators
Cultivation
Filtration
Safety Cabinets
General Consumables
Centrifugation Tubes
Deep-well plates
Micro Tubes
Photometers
Slides
Genomics
Concentration
DNA and RNA isolation
DNA-Electrophoresis
Electroporation
Gel-Documentation
PCR
PCR cabinets
Thermocyclers
Histology
Accessories and reagents
Dissecting sets
Embedding cassettes
Microtoms
Scalpels
Tissue floating baths
Microbiology
Analysis
Cell disruption
Cultivation
Disruptors
Filtration
Incubation
Media and reagents
Sterilizers and burners
Proteomics
Analysis
Blot Imaging
Blotting
ELISA
Microplates Readers and Washers
Protein-Electrophoresis
Purification
Liquid Handling
Dispensing
Bottletop dispensers
Hand dispensers
Microfluidics
Hoses and connections
Syringe pumps
Syringes
Pipettes
Capillary tubes
Graduated pipettes
Microlitre pipettes
Pasteur pipettes
Pipette balls
Pipette controllers
Pipette tips
Pipettes Accessories
Positive displacement pipettes
Reagent Reservoirs
Serological pipettes
Volumetric pipettes
Pumps
Dosing pumps
Drum pumps
Gear pumps
Peristaltic pumps
Rotary piston pumps
Titration
Burettes
Digital burettes
Digital burettes
Titrators
Volumetric apparatus
Graduated flasks
Measuring cylinders
Mixing cylinders
Occupational safety, Security
Breathing protection
Full face masks
Half masks
Hygiene masks
Ear protection
Noise protection
Eye protection
Accessories
Eyeshields
Overgoggles
Panoramic eyeshields
Safety shields
First-aid
Body showers
Boxes, Cabinets
Dressings/plasters
Eye wash bottles
Eye wash stations
Fire protection
Furniture
Chairs
Fume hoods
Furniture
Lamps
Safety cabinets
Step-ladders
Gloves
Chemical protective gloves
Cotton safety gloves
Cut resistant gloves
Glove box holder
Latex gloves
Nitrile gloves
Temperature protective gloves
Vinyl gloves
Identification of hazards
Safety signs
Protective clothing
Aprons
Caps
Coveralls
Laboratory coats
Oversleeves
Shoes
Radiation protection
Radiation shielding
Safety containers
Drum sumps
Transport, storage containers
Skin protection
Skin care
Transport
Trolleys
Waste disposal
Chemical Sorbents
Waste bins
Waste, Disposal bags
Optical instruments and Microscopes
Microscopy
Cold light sources
Counting chambers
Digital microscopes and cameras
Light microscopes
Microscopy accessories
Slide covers
Slide storage
Slides
Staining racks
Stereomicroscopes
Optical instruments
Magnifiers
Photometers
Accessories cuvettes
Glass cuvettes
Microplate reader and washer
OD-Measurement
Plastic cuvettes
Polarimeters
Special Photometers
Spectrophotometers
Refractometers
Benchtop refractometers
Hand held refractometers
Sample preparation
Laboratory presses
Presses
Grinding
Jaw breaker
Mills
Mortars
Mixing, Homogenisation
Dispersers
Homogenisers
Ultrasonic homogenisers
Sampling
Sample containers
Sample transport, storage
Samplers, gas
Samplers, Liquids
Samplers, Solids
Sieving
Laboratory presses
Sample dividers
Sieve shakers
Test sieves
Stirring, Shaking, Mixing
Magnetic stirrers / Hotplates
Accessories, Magnetic stirring bars
with heating and induction
With heating and motor
Without heating, cable free
without heating, with induction
Without heating, with motor
Overhead stirrers
Instruments
Stirrer Heads
Stirrers
Shakers and mixers
Microtitre plate shakers
Orbital shakers
Overhead shakers
Reciprocating shakers
Rocking shakers
Roller mixers
Thermoshakers
Tumbling shakers
Vortexer
Vacuum technology, Drying, Dry storage
Accessories
Cold traps, Woulff bottles
for vacuum pumps
Desiccators
Desiccator cabinets
Desiccators - glass
Desiccators - plastic
Diaphragm pumps
Pump units-speed controlled
Pump units-valve controlled
Pumps
Laboratory Freeze drying
Freeze dryers
Piston pumps/Compressors
Pumps and compressors
Rotary vane pumps
Pump units
Pumps
Vacuum controller
Sensors and Controllers
Water jet pumps
Water jet pumps
Other
Laboratorijske kemikalije
Laboratorijski aparati
Divaces
Jars
Mixing blade
Accessories
Servisna i aplikativna podrška kupcima
Technische documentatie
Specificaties
Akcije in promocije
O naam
Kontaktni podatki
Neem contact met ons op
navigatie
Laboratorijski potrošni material
Specialites
Schott Duran
La-Pha-Pack, vijale,...
Cytiva
Thermo Scientific
Analytical measurement and testing
Viscosity determination
Viscosimeter
Analytical instruments and systems
Fluoride determination
Melting point determination
Balances
Accessories
Analytical balances
Moisture balances
Other balances
Pocket balances
Precision balances
Weights
Climate and environment measurement
Hygrometer
Special climate meters
Conductivity measurement
electrodes
portable devices
Solutions
Table devices
Density determination
Density meters
Density meter, Pycnometer
Viscosimeter
Material testing
Force measurement
Hardness measurement
Surface analysis
Thickness measurement
Multiparameter measurement
Devices
oxygen measurement
Devices
electrodes and accessories
pH-measurement
Buffer solutions
Electrode accessories
Electrodes
Paper, chopstick
portable devices
Table devices
Thermometers
Laboratory thermometers
Surface, Insertion thermometers
Temperature data logger
Temperature meters
Temperature-Humidity logger
Timing
Clocks
stopwatch
Timers
Chromatography
Gas chromatography
Gas generators
GC columns
GC consumables
GC reagents
Liquid chromatography
Glass columns
HPLC columns
Solvent storage/handling
NMR/EPR
Accessories
Tubes
Sample preparation
SPE
Syringe filters
Syringes
Disposable syringes
Microlitre Syringes
Thin-layer chromatography
Accessories
Chambers
Detection
Plates
Vials
Accessories
NMR tubes
Vials, Septa
Cleanroom, Cleaning and sterilisation
Cleaning implements
Brushes
Draining racks
Wipes, cloths
Cleanroom
Cleaning
Documentation and adhesive tapes
Eye protection
Facility
Hand protection
Protective clothing
Disinfection
Compressed air spray
for Instruments
for surfaces
Screen cleaners
Steam sterilisers - Autoclaves
Accessories
Instruments
Sterile packaging
Ultrasonic cleaners
Instruments
Ultrasonic cleaners
Washers, disinfectors
Accessories
Instruments
Distillation, separation, filtration
Distillation, synthesis
Components for Extraction
Components for reaction and distillation
Distillation-Accessories
Dropping Funnels
Flasks with NS joint neck
Flat ground flange reaction vessels
Gas wash bottles
Ground joints, attachable
KPG stirrer and bearings
Laboratory reactors
NS joints accessories
Reflux condenser
standard ground stoppers
Stopcocks and Valves
Tubing adapters
Filtration
Dialysis tubes
Filter paper, qualitative
Filter paper, quantitative
Filtration apparatus
Glass-fibre filters
In-Line filter
Membrane filters
Microfilter plates
Syringe filters
Rotary evaporators
Accessories
Instruments
Separating, centrifuging
Benchtop centrifuges
Centrifuge tubes
Minicentrifuges
Environmental-, soil-, water-, food analysis
Sample analysis
Oil Testing
BOD
COD
Elemental analysis
Extraction
Kjeldahl
Milk analysis
Photometers
Special distillation
Turbidity
Sample preparation
Air sampling and analysis
for standard analysis
Trace analysis
Accessories
Tubes
Water purification
Distillation
Pure and ultra-pure water
General laboratory consumables
General laboratory aids
Accessories for electrical device
Bags, Foils
Batteries
Documenting
Greases
Labels
Laboratory jacks
Stands, Fittings
Heating
Beaker tongs
Burners
Drying
Tripod
Tools
Forceps
Glass working
Knives, Scissors
Scoops
Spoons, Spatulas
Workshop tools
Tubing
Adapters, Clips, Clamps
Plastic
Rubber
Stoppers
Tubing/Gas
Vessels
Aspirators and Carboys
Baskets
Beakers
Buckets
Containers
Crucibles
Cylinders
Dishes
Flasks
Funnels
Measuring jugs
Narrow-mouth bottles
Reagent bottles
Spray, dropping bottles
Square bottles
Stoppers
Test tubes
Transport boxes
Tube racks
Wide mouth kegs
Wide-mouth bottles
Heating and cooling technology
Cooling
Biobanking
Cryogenic accessories
Cryogenic boxes
Cryogenic racks
Cryogenic storage tanks
Cryogenic tubes
Dewar flasks
Ice machines
Liquid nitrogen-Accessories
Low and Ultra low temperature freezers
Refrigerators and Freezers
Refrigerators and Freezers ex protected
Transport boxes
Heating
CO2-Incubators
Cooling incubators
Heating baths
Heating mantles
Hotplates
Incubators
Microwaves
Ovens, Furnaces
Shaking incubators
Shaking water baths
Temperature controllers, thermostats
Test incubators
Thermoblocks
Universal, Heating and Drying incubators
Vacuum drying incubators
Water baths
Temperature regulators
Circulator baths
Cooling-Thermostats
Dynamic Temperature Control Systems
Heating-Thermostats
Temperature Control Accessories
Life Sciences
Cell Culture
Aspirators
Cultivation
Filtration
Safety Cabinets
General Consumables
Centrifugation Tubes
Deep-well plates
Micro Tubes
Photometers
Slides
Genomics
Concentration
DNA and RNA isolation
DNA-Electrophoresis
Electroporation
Gel-Documentation
PCR
PCR cabinets
Thermocyclers
Histology
Accessories and reagents
Dissecting sets
Embedding cassettes
Microtoms
Scalpels
Tissue floating baths
Microbiology
Analysis
Cell disruption
Cultivation
Disruptors
Filtration
Incubation
Media and reagents
Sterilizers and burners
Proteomics
Analysis
Blot Imaging
Blotting
ELISA
Microplates Readers and Washers
Protein-Electrophoresis
Purification
Liquid Handling
Dispensing
Bottletop dispensers
Hand dispensers
Microfluidics
Hoses and connections
Syringe pumps
Syringes
Pipettes
Capillary tubes
Graduated pipettes
Microlitre pipettes
Pasteur pipettes
Pipette balls
Pipette controllers
Pipette tips
Pipettes Accessories
Positive displacement pipettes
Reagent Reservoirs
Serological pipettes
Volumetric pipettes
Pumps
Dosing pumps
Drum pumps
Gear pumps
Peristaltic pumps
Rotary piston pumps
Titration
Burettes
Digital burettes
Digital burettes
Titrators
Volumetric apparatus
Graduated flasks
Measuring cylinders
Mixing cylinders
Occupational safety, Security
Breathing protection
Full face masks
Half masks
Hygiene masks
Ear protection
Noise protection
Eye protection
Accessories
Eyeshields
Overgoggles
Panoramic eyeshields
Safety shields
First-aid
Body showers
Boxes, Cabinets
Dressings/plasters
Eye wash bottles
Eye wash stations
Fire protection
Furniture
Chairs
Fume hoods
Furniture
Lamps
Safety cabinets
Step-ladders
Gloves
Chemical protective gloves
Cotton safety gloves
Cut resistant gloves
Glove box holder
Latex gloves
Nitrile gloves
Temperature protective gloves
Vinyl gloves
Identification of hazards
Safety signs
Protective clothing
Aprons
Caps
Coveralls
Laboratory coats
Oversleeves
Shoes
Radiation protection
Radiation shielding
Safety containers
Drum sumps
Transport, storage containers
Skin protection
Skin care
Transport
Trolleys
Waste disposal
Chemical Sorbents
Waste bins
Waste, Disposal bags
Optical instruments and Microscopes
Microscopy
Cold light sources
Counting chambers
Digital microscopes and cameras
Light microscopes
Microscopy accessories
Slide covers
Slide storage
Slides
Staining racks
Stereomicroscopes
Optical instruments
Magnifiers
Photometers
Accessories cuvettes
Glass cuvettes
Microplate reader and washer
OD-Measurement
Plastic cuvettes
Polarimeters
Special Photometers
Spectrophotometers
Refractometers
Benchtop refractometers
Hand held refractometers
Sample preparation
Laboratory presses
Presses
Grinding
Jaw breaker
Mills
Mortars
Mixing, Homogenisation
Dispersers
Homogenisers
Ultrasonic homogenisers
Sampling
Sample containers
Sample transport, storage
Samplers, gas
Samplers, Liquids
Samplers, Solids
Sieving
Laboratory presses
Sample dividers
Sieve shakers
Test sieves
Stirring, Shaking, Mixing
Magnetic stirrers / Hotplates
Accessories, Magnetic stirring bars
with heating and induction
With heating and motor
Without heating, cable free
without heating, with induction
Without heating, with motor
Overhead stirrers
Instruments
Stirrer Heads
Stirrers
Shakers and mixers
Microtitre plate shakers
Orbital shakers
Overhead shakers
Reciprocating shakers
Rocking shakers
Roller mixers
Thermoshakers
Tumbling shakers
Vortexer
Vacuum technology, Drying, Dry storage
Accessories
Cold traps, Woulff bottles
for vacuum pumps
Desiccators
Desiccator cabinets
Desiccators - glass
Desiccators - plastic
Diaphragm pumps
Pump units-speed controlled
Pump units-valve controlled
Pumps
Laboratory Freeze drying
Freeze dryers
Piston pumps/Compressors
Pumps and compressors
Rotary vane pumps
Pump units
Pumps
Vacuum controller
Sensors and Controllers
Water jet pumps
Water jet pumps
Other
Laboratorijske kemikalije
Laboratorijski aparati
Divaces
Jars
Mixing blade
Accessories
Servisna i aplikativna podrška kupcima
Akcije in promocije
O naam
Kontaktni podatki
Kefo.si
/
Laboratorijski potrošni material
/
Other
Other
Soort
positie
Titel: A tot Z
Titel: A tot Z
Prijs: Minder meer
Prijs: hoog naar laag
aangemaakt
Kies grootte Pogled
laten zien aan de kant
6
18
36
HPLC-COLUMN INERTSIL ODS-3 100A
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPLC-COLUMN PRONTOSIL 120-5-C18 AQ
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPLC-COLUMN PRONTOSIL 120-5-C18 AQ
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPLC-COLUMN PRONTOSIL 120-5-C18 AQ
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPLC-COLUMN PRP-3 10uM, 4.1X150MM
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPLC-COLUMN PRP-X100
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPLC-COLUMN PRP-X100
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPLC-COLUMN PRP-X100
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPLC-COLUMN PRP-X100
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPLC-COLUMN PRP-X100
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPLC-COLUMN PRP-X100
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPLC-COLUMN PRP-X200
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPLC-COLUMN PRP-X200 10uM, 4.1X250MM
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPLC-COLUMN PRP-X200 10uM, 4.6X250MM
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPLC-COLUMN PRP-X300 7uM, 4.1X250MM
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPLC-COLUMN PRP-X500
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPLC-COLUMN RCX-30
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPLC-DESKTOP MOUNT
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPLC-DESKTOP MOUNT, PE-HD, ELECTR. CONDU
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPLC-DIVISION COLUMN 250 X 4,6 MM
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPLC-SÄULE PRP-X100
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPLC-SŽULE PRIMESEP 100 3,2X150MM 5 uM
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPLC-SŽULE PRIMESEP 100 3,2X150MM 5 uM
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPLC-TUBE O INT.: 0,762 MM
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPTLC DENSITOMETER CD 60
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPTLC FINISHES
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPTLC-Applicator, AS 30
HPTLC-Applicator, AS 30
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPTLC-PLATES NANO-DURASIL-20
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPTLC-PLATES NANO-DURASIL-20
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPTLC-PLATES NANO-DURASIL-20 UV254
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPTLC-PLATES NANO-DURASIL-20 UV254
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPTLC-PLATES NANO-SIL CN UV254
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPTLC-PLATES NANO-SIL CN UV254 SIZE: 10
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPTLC-PLATES NANO-SIL NH2 UV254 SIZE: 10
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HPTLC-PLATES NANO-SIL NH2 UV254 SIZE: 10
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
HR TITRANT QAC
×
Praat met uw arts of apotheker.
×
Raadpleeg de groothandel.
De eerste
voorgaand
1184
1185
1186
1187
1188
volgend
laatste
verkoopplan
Laboratorijski potrošni material
Specialites
Thermo Scientific
Analytical measurement and testing
Chromatography
Cleanroom, Cleaning and sterilisation
Distillation, separation, filtration
Environmental-, soil-, water-, food analysis
General laboratory consumables
Heating and cooling technology
Life Sciences
Liquid Handling
Occupational safety, Security
Optical instruments and Microscopes
Sample preparation
Stirring, Shaking, Mixing
Vacuum technology, Drying, Dry storage
Other
Laboratorijske kemikalije
Laboratorijski aparati
Servisna i aplikativna podrška kupcima
